Protesters smashed a large window at President Obama’s re-election campaign office in downtown Oakland late Friday night, tore down a nearby fence and vandalized cars, according to police, witnesses and video footage.

Staffers and volunteers were inside the Organizing for America office at 1714 Telegraph Ave. when it was vandalized after 9 p.m., but no one was hurt, said a staffer who declined to be identified. The office is a joint effort of the Obama campaign and the Democratic National Committee.

When the window was broken, well over 100 people had joined what began as a rally against the city’s handling of growing crowds at the first-Friday-of-the-month event called Art Murmur, a gallery crawl centered in the Uptown arts district from 6 to 9 p.m.

Protesters – who included Occupy Oakland activists – said the city was cracking down on vendors and performers who came into the neighborhood during the gallery crawl without permits. Until June, the galleries had closed down a block of 23rd Street, but the approach got too expensive and hectic.

Protesters smashed a large window at President Obama’s re-election campaign office in downtown Oakland late Friday night, tore down a nearby fence and vandalized cars, according to police, witnesses and video footage.

Staffers and volunteers were inside the Organizing for America office at 1714 Telegraph Ave. when it was vandalized after 9 p.m., but no one was hurt, said a staffer who declined to be identified. The office is a joint effort of the Obama campaign and the Democratic National Committee.

When the window was broken, well over 100 people had joined what began as a rally against the city’s handling of growing crowds at the first-Friday-of-the-month event called Art Murmur, a gallery crawl centered in the Uptown arts district from 6 to 9 p.m.

Protesters – who included Occupy Oakland activists – said the city was cracking down on vendors and performers who came into the neighborhood during the gallery crawl without permits. Until June, the galleries had closed down a block of 23rd Street, but the approach got too expensive and hectic.